demo1

src/main/java/com/example/demo/DemoApplication.java

@@ -1,20 +1,203 @@
-package com.example.demo;
+package com.example.demo; 
+import java.sql.*; 
+import java.util.*; 
+import java.util.logging.Logger; 
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
-
 @SpringBootApplication
 @RestController
 public class DemoApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(DemoApplication.class, args);
+    private static final Logger log;
+
+    static {
+        System.setProperty("java.util.logging.SimpleFormatter.format", "[%4$-7s] %5$s %n");
+        log =Logger.getLogger(DemoApplication.class.getName());
+    }
+
+    @RequestMapping("/")
+    public static void main(String[] args) throws Exception {
+        log.info("Loading application properties");
+        Properties properties = new Properties();
+        properties.load(DemoApplication.class.getClassLoader().getResourceAsStream("application.properties"));
+
+        log.info("Connecting to the database");
+        Connection connection = DriverManager.getConnection(properties.getProperty("url"), properties);
+        log.info("Database connection test: " + connection.getCatalog());
+
+
+
+
+		Salaries salaries= new Salaries();
+		salaries = readData(connection);
+
+
+        log.info("Closing database connection");
+        connection.close();
+    }
+
+    private static Salaries readData(Connection connection) throws SQLException {
+        log.info("Read data");
+        PreparedStatement readStatement = connection.prepareStatement("SELECT * FROM dbo.salaries;");
+        ResultSet resultSet = readStatement.executeQuery();
+        if (!resultSet.next()) {
+            log.info("There is no data in the database!");
+            return null;
+        }
+        Salaries salaries = new Salaries();
+        salaries.setWork_year(resultSet.getInt("work_year"));
+        salaries.setExperience_level(resultSet.getString("experience_level"));
+        salaries.setEmployment_type(resultSet.getString("employment_type"));
+        salaries.setJob_title(resultSet.getString("job_title"));
+        salaries.setSalary(resultSet.getInt("salary"));
+        salaries.setSalary_currency(resultSet.getString("salary_currency"));
+        salaries.setSalary_in_usd(resultSet.getInt("salary_in_usd"));
+        salaries.setEmployee_residence(resultSet.getString("employee_residence"));
+        salaries.setRemote_ratio(resultSet.getInt("remote_ratio"));
+        salaries.setCompany_location(resultSet.getString("company_location"));
+        salaries.setCompany_size(resultSet.getString("company_size"));
+
+        log.info("Data read from the database: " + salaries.toString());
+        return salaries;
+    }
+}
+
+
+class Salaries {
+
+    private int work_year;
+    private String experience_level;
+    private String employment_type;
+    private String  job_title;
+    private int salary;
+    private String salary_currency;
+    private int salary_in_usd;
+    private String employee_residence;
+    private int remote_ratio;
+    private String company_location;
+    private String company_size;
+
+    public Salaries() {
+    }
+
+	public Salaries(int work_year, String experience_level, String employment_type, String job_title, int salary,
+			String salary_currency, int salary_in_usd, String employee_residence, int remote_ratio,
+			String company_location, String company_size) {
+		super();
+		this.work_year = work_year;
+		this.experience_level = experience_level;
+		this.employment_type = employment_type;
+		this.job_title = job_title;
+		this.salary = salary;
+		this.salary_currency = salary_currency;
+		this.salary_in_usd = salary_in_usd;
+		this.employee_residence = employee_residence;
+		this.remote_ratio = remote_ratio;
+		this.company_location = company_location;
+		this.company_size = company_size;
 	}
 
-	@RequestMapping("/")
-	String sayHello() {
-		return "Hello World!";
+	public int getWork_year() {
+		return work_year;
 	}
-}
+
+	public void setWork_year(int work_year) {
+		this.work_year = work_year;
+	}
+
+	public String getExperience_level() {
+		return experience_level;
+	}
+
+	public void setExperience_level(String experience_level) {
+		this.experience_level = experience_level;
+	}
+
+	public String getEmployment_type() {
+		return employment_type;
+	}
+
+	public void setEmployment_type(String employment_type) {
+		this.employment_type = employment_type;
+	}
+
+	public String getJob_title() {
+		return job_title;
+	}
+
+	public void setJob_title(String job_title) {
+		this.job_title = job_title;
+	}
+
+	public int getSalary() {
+		return salary;
+	}
+
+	public void setSalary(int salary) {
+		this.salary = salary;
+	}
+
+	public String getSalary_currency() {
+		return salary_currency;
+	}
+
+	public void setSalary_currency(String salary_currency) {
+		this.salary_currency = salary_currency;
+	}
+
+	public int getSalary_in_usd() {
+		return salary_in_usd;
+	}
+
+	public void setSalary_in_usd(int salary_in_usd) {
+		this.salary_in_usd = salary_in_usd;
+	}
+
+	public String getEmployee_residence() {
+		return employee_residence;
+	}
+
+	public void setEmployee_residence(String employee_residence) {
+		this.employee_residence = employee_residence;
+	}
+
+	public int getRemote_ratio() {
+		return remote_ratio;
+	}
+
+	public void setRemote_ratio(int remote_ratio) {
+		this.remote_ratio = remote_ratio;
+	}
+
+	public String getCompany_location() {
+		return company_location;
+	}
+
+	public void setCompany_location(String company_location) {
+		this.company_location = company_location;
+	}
+
+	public String getCompany_size() {
+		return company_size;
+	}
+
+	public void setCompany_size(String company_size) {
+		this.company_size = company_size;
+	}
+
+	@Override
+	public String toString() {
+		return "Salaries [work_year=" + work_year + ", experience_level=" + experience_level + ", employment_type="
+				+ employment_type + ", job_title=" + job_title + ", salary=" + salary + ", salary_currency="
+				+ salary_currency + ", salary_in_usd=" + salary_in_usd + ", employee_residence=" + employee_residence
+				+ ", remote_ratio=" + remote_ratio + ", company_location=" + company_location + ", company_size="
+				+ company_size + "]";
+	}
+
+
+
+
+}